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The 220 H4TU-C works with the following list
versions of the HDSL4 unit for the remote end
(H4TU-R) and the repeater (H4R):
Part Number
Description
122x424L1 ............... T200 H4TU-R,Local Power
122x426L1 ............... T200 H4TU-R, Span Power
122x441L1 ............... T200 H4R
122x445L1 ............... 239 H4R
Note: x = any generic number
The 220 H4TU-C can be deployed in circuits
consisting of one H4TU-C, one H4TU-R, and up to
two H4Rs. System power and alarm bus connections
are made through the backplane of the 220 shelf.
The 220 H4TU-C contains an onboard fuse. If the
fuse opens, it supplies a –48 VDC voltage to the fuse
alarm bus and all front panel indicators will be off.
This fuse is not designed to be replaced in the field.
The 220 H4TU-C uses a DC-to-DC converter to derive
its internal logic and span powering voltages from the
–48 VDC office supply. The H4TU-C can span power
an H4TU-R and up to two H4Rs as listed above.
Revision History
This is the third release of this document. This
revision is to update the Screens.
2. INSTALLATION
C A U T I O N !
C A U T I O N
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
After unpacking the unit, inspect it for damage. If
damage is discovered, file a claim with the carrier, then
contact ADTRAN. For more information, refer to the
Warranty and Customer Service section.
2
Compliance
Table 1 lists compliance codes for the 220 H4TU-C.
This product is intended for installation in restricted
access locations only and in equipment with a Type
"B" or "E" enclosure.
WARNING
Up to –200 VDC may be present on
telecommunications wiring. The DSX-1
interface is intended for connection to
intra-building wiring only. Ensure chassis ground
is properly connected.
Table 1. Compliance Codes
Code
Power Code (PC)
Telecommunication Code (TC)
Installation Code (IC)
This product provides span powering voltage
(negative only with respect to ground, –190 VDC
nominal, GFI protection < 5 mA) and meets all
requirements of Bellcore GR-1089-CORE (Class A2)
and ANSI T1.418-2002. This product is NRTL listed
to the applicable UL standards.
Front Panel Indicators
The 220 H4TU-C has seven front panel LEDs,
illustrated in Table 2, which indicate operational
status.
The 220 H4TU-C plugs directly into the 220 shelf.
No installation wiring is required.
There are no configuration switches for the H4TU-C.
Configuration is performed via software discussed in
Section 5 of this practice.
Input
Output
F
C
–
X
A
–
61222401L1-5C
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